Nitrogen synergistic agent for intensive vegetable filed and preparation thereof

A technology of nitrogen and synergist in vegetable fields, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problem of rare nitrogen fertilizer synergist products, and achieve the advantages of preventing nitrate leaching and migration, low price and strong strength. Effect of ion adsorption capacity

Inactive Publication Date: 2009-02-25
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the relevant nitrogen synergists in my country are mainly designed for nitrogen fertilizers or nitrogen-containing compound fertilizers, and there are not many nitrogen synergist products that are directly applied to the field for fertilizer-soil-crop systems

Method used

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  • Nitrogen synergistic agent for intensive vegetable filed and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Nitrogen synergist: 20 kg of calcium cyanamide (20% nitrogen), 40 kg of zeolite powder and 40 kg of lignite.

[0019] The calcium cyanamide is a commercially available product, and the product reaches the following standards: 17-23% nitrogen-containing, 40-50% calcium oxide, and a pH of 11.0-12.5; Lignite; the zeolite powder is a commercially available product obtained by crushing natural zeolite and passing through a 60-100 mesh sieve, with an ammonium exchange capacity of 1400 mmol / kg and a pH value of 8.0.

[0020] Preparation method: 20 kg (containing 20% ​​nitrogen) and 40 kg of zeolite powder are mechanically mixed, and then 40 kg of lignite is added to the mixture and mechanically mixed to obtain a nitrogen synergist.

[0021] During its operation: Since calcium cyanamide is powdery or granular, its dust is harmful to the human body, so the following items should be paid attention to during specific operations: the operator must wear goggles, masks, rubber gloves...

Embodiment 2

[0023] The difference from Example 1 is that the proportioning of raw materials is different, and the preparation method is the same as that of Example 1.

[0024] Numbering Calcium cyanamide

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Abstract

The invention relates to a soil fertilizer synergist, in particular to a nitrogen synergist applied to protected horticultural vegetable fields and a preparation method thereof. The components by weight percentage are 10-30% of calcium cyanamide, 30-50% of zeolite powder and 30-50% of lignite. The preparation method comprises the following steps: the 10-30% of calcium cyanamide and the 30-50% of zeolite powder are mechanically and evenly mixed to obtain a mixture, and then the mixture is added with the 30-50% of lignite and mechanically mixed evenly, thus obtaining the nitrogen synergist. The preparation method is simple and pollution-free, and the nitrogen synergist is an organic and inorganic combined nitrogen synergist which has the effects of combining the slow release and quick release of nutrients, slowly releasing fertilizer nutrients, improving the utilization rate of the fertilizer, reducing the amount of chemical fertilizers used, improving the physical and chemical properties of soil and improving the productivity of the soil.

Description

technical field [0001] The invention relates to a soil fertilizer synergist, in particular to a nitrogen synergist for facility vegetable fields and a preparation method thereof. Background technique [0002] The cultivation area of ​​protected vegetables in China reaches 2.5 million hectares, accounting for more than 80% of the total area of ​​protected vegetables in the world. my country's protected vegetable fields have high land use intensity, high frequency of use, and large amounts of fertilizers. Both chemical fertilizers and organic fertilizers far exceed crop requirements. Excessive application of nitrogen fertilizers is very common. For example, 80 tons of decomposed organic fertilizers and 4,000 kilograms of chemical fertilizers are applied per hectare per year in Liaoning's facility vegetable fields. The direct consequence of high-intensity utilization and high-volume fertilization of vegetable fields in my country is the decline of sustainable utilization capac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/08C05G3/90
Inventor 姜勇张玉革梁文举
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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